Romanian oil fields during WW II

Screwing on new lengths of oil pipe at a new well. 
The huge swivel which holds the drill pipe when in operation is seen on the left.
June, 18, 1940
A railway yard beside one of the many oil refineries in Romania. The oil is piped down to the large tanks from the wells in the hills in the background, refined and then pumped into tankcars.
Romanian oil fields. A modern oil refinery at Campina
June, 18, 1940
Cracking plant Astra Romania
August, 16, 1943
General view of Astra Romania - the biggest oil refinery in Europe
August, 16, 1943
Refining plant at Brazi in the Prahova oil field north of Bucharest
January, 23, 1940